He is the co-producer and host of the Comedy Club Russia which airs on Russian TV channel TNT.

From 1993 to 2002, he was a member (captain from 1997) of the New Armenians [ru] team of the Russian TV show KVN.

In 2003, with the help of fellow New Armenians Artur Janibekyan and Artash Sarksyan, he founded Comedy Club.

He hosted the first two seasons of Minute of Fame, the Russian version of America's Got Talent on Channel One.

[1][2] In March 2007, his brother Levon Martirosyan announced that Garik intends to participate in the pre-election campaign of the United Liberal-National Party of Armenia.